apache負載均衡策略有三種:

第一種：輪詢策略:即根據http請求數(requests)來均衡的分配給所代理的伺服器，在上述文章中，其實，就是分配給192.168.2.40和192.168.2.22.代理配置如下:

ProxyRequests Off
<Proxy balancer://cluster>
        BalancerMember http://192.168.2.40:80/
        BalancerMember http://192.168.2.22:80/
</Proxy>
ProxyPass /test balancer://cluster/test
ProxyPassReverse /test balancer://cluster/test
 

第二種:權重分配策略:即根據請求數量，調整分配比例(即訪問三次40，訪問一次22)。配置如下:

ProxyRequests Off
<Proxy balancer://cluster>
        BalancerMember http://192.168.2.40:80/ loadfactor=3
        BalancerMember http://192.168.2.22:80/ loadfactor=1
</Proxy>
ProxyPass /test balancer://cluster/test
ProxyPassReverse /test balancer://cluster/test

第三種：請求響應策略:即根據流量

ProxyRequests Off
<Proxy balancer://cluster>
        BalancerMember http://192.168.2.40:80/ loadfactor=3
        BalancerMember http://192.168.2.22:80/ loadfactor=1
</Proxy>
ProxyPass /test balancer://cluster/test lbmethod=bytraffic
ProxyPassReverse /test balancer://cluster/test lbmethod=bytraffic